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RE: Monit reliability in monitoring Apache

From: Mike Robertson
Subject: RE: Monit reliability in monitoring Apache
Date: Mon, 17 Jul 2006 12:33:53 -0500

I am seeing the same thing every time monit checks httpd, I first thought it
was a resource limit, but on further checking its not. It is only happening
on one of my machines running RHREL 4.

-----Original Message-----
From: address@hidden
[mailto:address@hidden On Behalf
Of Jan-Henrik Haukeland
Sent: Monday, July 17, 2006 12:14 PM
To: This is the general mailing list for monit
Subject: Re: Monit reliability in monitoring Apache

On 17. jul. 2006, at 18.22, Peter M. Abraham wrote:

> As shared in the original post, monit reports the failure.  This is  
> not a manual check, but that when monit states there is a failure,  
> everything on the server level is fine including the PID and  
> process tree.

Have you checked the monit and apache logs and can confirm that  
apache was not restarted by monit? From your configuration, both of  
these tests can restart apache if they should fail. I believe this is  
the reason monit fires of that alert mail or even more likely that  
apache in fact did not run and monit started it again.

>> >     if failed port 80 protocol http then restart
>> >     if loadavg (1min) > 5 then restart

Monit does not randomly fire of alert mails unless there is a reason.  
However if can save the pid number in apache's pid file and if the  
pid file has the same pid number _after_ you get the alert mail from  
monit then I believe you have found a bug, although improbable :-)

Jan-Henrik Haukeland
Mobil +47 97141255

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